package lucene.server.database.pool;

import lucene.server.database.utils.DialectUtil;

import java.sql.*;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.Executor;

public class PooledConnection implements Connection {
    private Connection connection;
    private String name;
    private String url;
    private String username;
    private String password;
    private String driverClass;
    private String dbType;

    //连接创建时间
    private long createTime = 0;
    //开始使用的时间,超过一定时间释放
    private long useStartTime = 0;
    private long lastUseTime = 0;
    //上次验证时间
    private long validateTime = 0;
    private String validateSql;

    //false--空闲，true--忙不可使用
    private boolean busy = false;


    public PooledConnection(String name,String url, String username, String password, String driverClass,String dbType) {
        this.name = name;
        this.url = url;
        this.username = username;
        this.password = password;
        this.driverClass = driverClass;
        this.dbType = dbType;
        this.createByThread();
    }
    public PooledConnection(String url, String username, String password) throws SQLException {
        this.connection = DriverManager.getConnection(url, username, password);
    }
    public void createByThread(){
        try {
            Class.forName(this.driverClass);
            this.connection = DriverManager.getConnection(this.url,this.username,this.password);
            this.validateSql = PoolConfig.getValidateSql(this.dbType);
        } catch (Exception e ) {
            System.out.format("\33[31;1m31:%s%n",e.getMessage());
        }
        createTime = System.currentTimeMillis();
    }

    public boolean modifyConnection(String name,String url, String username, String password, String driverClass,String dbType) {
        this.name = name;
        this.url = url;
        this.username = username;
        this.password = password;
        this.driverClass = driverClass;
        this.dbType = dbType;
        this.createByThread();
        return true;
    }

    public boolean isBusy() {
        return busy;
    }
    public void release() throws SQLException {
        this.close();
    }
    public void shutdown(){
        try {
            if(this.connection!=null && !this.connection.isClosed()){
                this.connection.close();
            }
        } catch (SQLException e) {
            System.out.format("\33[31;1m31:%s%s%n",this.name,e.getMessage());
        }
    }
    public PooledConnection use(){
        this.busy = true;
        this.useStartTime = System.currentTimeMillis();
        this.lastUseTime = System.currentTimeMillis();
        return this;
    }
    /*定时检测数据库连接*/
    public  void validateConnection() {


        if(this.busy)
        {
            return;
        }

        if(this.validateSql == null || this.validateSql.isEmpty()){
            return;
        }
        if(System.currentTimeMillis()-validateTime<PoolConfig.getValidateTimeMillis()){
            return;
        }

        this.validateTime = System.currentTimeMillis();

        Statement stmt = null;
        try {
            if (this.connection.isClosed()) {
                this.createByThread();
                return;
            }
            stmt = connection.createStatement();
            stmt.execute(this.validateSql);
        } catch (SQLException e) {
            this.createByThread();
            System.out.println("pooled connection validate error"+ this.name+ e.getMessage());
        } finally {
            if (stmt == null) {
                return;
            }
            try {
                stmt.close();
            } catch (Exception e) {
            }
        }

    }
    public Map<String,Object>  getConnectionInfo() throws SQLException {
        Map<String,Object> connInfo = new LinkedHashMap<>();
        connInfo.put("createTime",createTime);
        connInfo.put("lastUseTime",lastUseTime);
        connInfo.put("validateTime",validateTime);
        connInfo.put("busy",busy);
        connInfo.put("isClose",connection.isClosed());
        return connInfo;
    }
    public Map<String,Object>  getProductInfo() throws SQLException {
        Map<String,Object> productInfo = new LinkedHashMap<>();
        productInfo.put("DriverName",connection.getMetaData().getDriverName());
        productInfo.put("DriverVersion",connection.getMetaData().getDriverVersion());
        productInfo.put("DatabaseProductName",connection.getMetaData().getDatabaseProductName());
        productInfo.put("DatabaseProductVersion",connection.getMetaData().getDatabaseMajorVersion());
        return productInfo;
    }
    public String getName() {
        return name;
    }
    public String getDbType() {
        return dbType;
    }
    @Override
    public Statement createStatement() throws SQLException {
        return connection.createStatement();
    }

    @Override
    public PreparedStatement prepareStatement(String sql) throws SQLException {
        return connection.prepareStatement(sql);
    }

    @Override
    public CallableStatement prepareCall(String sql) throws SQLException {
        return connection.prepareCall(sql);
    }

    @Override
    public String nativeSQL(String sql) throws SQLException {
        return connection.nativeSQL(sql);
    }

    @Override
    public void setAutoCommit(boolean autoCommit) throws SQLException {
        connection.setAutoCommit(autoCommit);
    }

    @Override
    public boolean getAutoCommit() throws SQLException {
        return connection.getAutoCommit();
    }

    @Override
    public void commit() throws SQLException {
        connection.commit();
    }

    @Override
    public void rollback() throws SQLException {
        connection.rollback();
    }

    @Override
    public void close() {
        this.useStartTime = 0L;
        this.lastUseTime = System.currentTimeMillis();
        this.busy = false;
    }

    @Override
    public boolean isClosed() throws SQLException {
        return connection.isClosed();
    }

    @Override
    public DatabaseMetaData getMetaData() throws SQLException {
        return connection.getMetaData();
    }

    @Override
    public void setReadOnly(boolean readOnly) throws SQLException {
        connection.setReadOnly(readOnly);
    }

    @Override
    public boolean isReadOnly() throws SQLException {
        return connection.isReadOnly();
    }

    @Override
    public void setCatalog(String catalog) throws SQLException {
        connection.setCatalog(catalog);
    }

    @Override
    public String getCatalog() throws SQLException {
        return connection.getCatalog();
    }

    @Override
    public void setTransactionIsolation(int level) throws SQLException {
        connection.setTransactionIsolation(level);
    }

    @Override
    public int getTransactionIsolation() throws SQLException {
        return connection.getTransactionIsolation();
    }

    @Override
    public SQLWarning getWarnings() throws SQLException {
        return connection.getWarnings();
    }

    @Override
    public void clearWarnings() throws SQLException {
        connection.clearWarnings();
    }

    @Override
    public Statement createStatement(int resultSetType, int resultSetConcurrency) throws SQLException {
        return connection.createStatement(resultSetType, resultSetConcurrency);
    }

    @Override
    public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
        return connection.prepareStatement(sql, resultSetType, resultSetConcurrency);
    }

    @Override
    public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
        return connection.prepareCall(sql, resultSetType, resultSetConcurrency);
    }

    @Override
    public Map<String, Class<?>> getTypeMap() throws SQLException {
        return connection.getTypeMap();
    }

    @Override
    public void setTypeMap(Map<String, Class<?>> map) throws SQLException {
        connection.setTypeMap(map);
    }

    @Override
    public void setHoldability(int holdability) throws SQLException {
        connection.setHoldability(holdability);
    }

    @Override
    public int getHoldability() throws SQLException {
        return connection.getHoldability();
    }

    @Override
    public Savepoint setSavepoint() throws SQLException {
        return connection.setSavepoint();
    }

    @Override
    public Savepoint setSavepoint(String name) throws SQLException {
        return connection.setSavepoint(name);
    }

    @Override
    public void rollback(Savepoint savepoint) throws SQLException {
        connection.rollback(savepoint);
    }

    @Override
    public void releaseSavepoint(Savepoint savepoint) throws SQLException {
        connection.releaseSavepoint(savepoint);
    }

    @Override
    public Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
        return connection.createStatement(resultSetType, resultSetConcurrency, resultSetHoldability);
    }

    @Override
    public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
        return connection.prepareStatement(sql, resultSetType, resultSetConcurrency, resultSetHoldability);
    }

    @Override
    public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
        return connection.prepareCall(sql, resultSetType, resultSetConcurrency, resultSetHoldability);
    }

    @Override
    public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys) throws SQLException {
        return connection.prepareStatement(sql, autoGeneratedKeys);
    }

    @Override
    public PreparedStatement prepareStatement(String sql, int[] columnIndexes) throws SQLException {
        return connection.prepareStatement(sql, columnIndexes);
    }

    @Override
    public PreparedStatement prepareStatement(String sql, String[] columnNames) throws SQLException {
        return connection.prepareStatement(sql, columnNames);
    }

    @Override
    public Clob createClob() throws SQLException {
        return connection.createClob();
    }

    @Override
    public Blob createBlob() throws SQLException {
        return connection.createBlob();
    }

    @Override
    public NClob createNClob() throws SQLException {
        return connection.createNClob();
    }

    @Override
    public SQLXML createSQLXML() throws SQLException {
        return connection.createSQLXML();
    }

    @Override
    public boolean isValid(int timeout) throws SQLException {
        return connection.isValid(timeout);
    }

    @Override
    public void setClientInfo(String name, String value) throws SQLClientInfoException {
        connection.setClientInfo(name, value);
    }

    @Override
    public void setClientInfo(Properties properties) throws SQLClientInfoException {
        connection.setClientInfo( properties);
    }

    @Override
    public String getClientInfo(String name) throws SQLException {
        return connection.getClientInfo(name);
    }

    @Override
    public Properties getClientInfo() throws SQLException {
        return connection.getClientInfo();
    }

    @Override
    public Array createArrayOf(String typeName, Object[] elements) throws SQLException {
        return connection.createArrayOf(typeName, elements);
    }

    @Override
    public Struct createStruct(String typeName, Object[] attributes) throws SQLException {
        return connection.createStruct(typeName, attributes);
    }

    @Override
    public void setSchema(String schema) throws SQLException {
        connection.setSchema(schema);
    }

    @Override
    public String getSchema() throws SQLException {
        return connection.getSchema();
    }

    @Override
    public void abort(Executor executor) throws SQLException {
        connection.abort(executor);
    }

    @Override
    public void setNetworkTimeout(Executor executor, int milliseconds) throws SQLException {
        connection.setNetworkTimeout(executor, milliseconds);
    }

    @Override
    public int getNetworkTimeout() throws SQLException {
        return connection.getNetworkTimeout();
    }

    @Override
    public <T> T unwrap(Class<T> iface) throws SQLException {
        return connection.unwrap(iface);
    }

    @Override
    public boolean isWrapperFor(Class<?> iface) throws SQLException {
        return connection.isWrapperFor(iface);
    }
    public PreparedStatement getJobStatement(String sql) throws SQLException {
        PreparedStatement ps = this.connection.prepareStatement(sql, ResultSet.TYPE_FORWARD_ONLY,ResultSet.CONCUR_READ_ONLY);
        DialectUtil.setFetchSize(ps, this.getDbType());
        ps.setFetchDirection(ResultSet.FETCH_FORWARD);
        return ps;

    }
}
